Sökning: "accelerometer"

Visar resultat 1 - 5 av 76 avhandlingar innehållade ordet accelerometer.

  1. 1. Micromechanical three axis accelerometers : design, manufacture and general readout electronics

    Författare :Henrik Rödjegård; Chalmers University of Technology; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; three axis accelerometer; MEMS accelerometer; sensor test bench; sensor system; bilk micromaching; accelerometer design;

    Sammanfattning : .... LÄS MER

  2. 2. Validation and application of objective measures of obesity and physical activity : studies in pregnant and non-pregnant adults and in infants

    Författare :Anna Gradmark; Paul W Franks; David Fields; Umeå universitet; []
    Nyckelord :physical activity; validation; body composition; abdominal adipose tissue; methods; accelerometer; pregnancy; insulin sensitivity; offspring;

    Sammanfattning : Background Excess adipose tissue and low physical activity are two major determinants for chronic diseases such as type 2 diabetes and cardiovascular disease.  Understanding these relationships requires accurate and precise measures of body composition and physical activity, and most existing observational studies lack such measures. LÄS MER

  3. 3. Neighborhood environment and physical activity

    Författare :Ulf Eriksson; kardiovaskulär epidemiologi och levnadsvanor Allmänmedicin; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; walkability; land use; residential density; physical activity pattern; accelerometer; public health; walking; GIS; physical activity; Neighborhood;

    Sammanfattning : Introduction Insufficient levels of physical activity are one of the top contributors to global mortality, and it is an important public health priority to increase the proportion of physically active people in the population. The interest in environmental determinants of physical activity has been rapidly increasing over the past few years. LÄS MER

  4. 4. Integration of graphene into MEMS and NEMS for sensing applications

    Författare :Xuge Fan; Frank Niklaus; Peter Steeneken; KTH; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; Micro-electromechanical systems MEMS ; Nano-electromechanical systems NEMS ; heterogeneous 3D integration; Graphene; single-layer graphene; double-layer graphene; bilayer graphene; chemical vapor deposition CVD ; suspended graphene beams; suspended graphene membranes; doubly clamped; fully clamped; silicon on insulator SOI ; vapor hydrofluoric acid VHF ; Young’s modulus; built-in stress; built-in tension; piezoresistivity; gauge factor; accelerometer; resonators; electromechanical sensing; advanced transducers; humidity; gas sensing; sensitivity; CO2 sensing; graphene grain boundary; line defects; optical microscopy; wire bonding; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : This thesis presents a novel approach to integrate chemical vapor deposition (CVD) graphene into silicon micro- and nanoelectromechanical systems (MEMS/NEMS) to fabricate different graphene based MEMS/NEMS structures and explore mechanical properties of graphene as well as their applications such as acceleration sensing, humidity sensing and CO2 sensing. The thesis also presents a novel method of characterization of CVD graphene grain boundary based defects. LÄS MER

  5. 5. Methods for measuring physical workload with relevance for musculoskeletal disorders of neck and upper limb

    Författare :Gert-Åke Hansson; Avdelningen för arbets- och miljömedicin; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; shoulder; exposure-response relation; exposure; repetitiveness; movements; postures; questionnaire; EMG; electromyography; accelerometer; Goniometer; inclinometer; arm; wrist; hand.; Occupational health; industrial medicine; Yrkesmedicin; arbetsmiljömedicin;

    Sammanfattning : Work-related musculoskeletal disorders of the neck and upper limb are a major problem. Women in repetitive manual work is one large affected group. Preventive actions are hampered by the lack of knowledge regarding quantitative exposure-response relations for physical workload. LÄS MER